hypophosphorous acid[hī′pō fäs′fə rəs, -pə-]
hypophosphorous acid definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a monobasic acid of phosphorus, HPO: it is a strong reducing agent
hypophosphorous acid definition by American Heritage Dictionary
A clear, colorless or slightly yellow liquid, H3PO2, used as a reducing agent.